1 1/2 pounds ground beef
1 8 ounce can pineapple slices in juice , undrained
1 10 1/2 ounce can Campbell's® Condensed French Onion Soup
2 teaspoons packed brown sugar
1 tablespoon cider vinegar
1 French bread, cut crosswise into 6 pieces
Shape the beef into 6 (1/2-inch thick) burgers.
Cook the burgers in a 12-inch skillet over medium-high heat until well browned on both sides. Pour off any fat. Top each burger with 1 slice pineapple. Reserve the pineapple juice.
Split the bread pieces. Serve the burgers and sauce on the bread.